From the Division of Infectious Diseases, Children's Hospital Boston and Harvard Medical School, Boston. Address reprint requests to Dr. Wessels at the Division of Infectious Diseases, Children's Hospital Boston, 300 Longwood Ave., Boston, MA 02115, or at [email protected].
No potential conflict of interest relevant to this article was reported.
Disclosure forms provided by the author are available with the full text of this article at NEJM.org.
